# Parallel Lines and Transversals

## Three or more parallel lines cut by two transversals divide them proportionally.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Parallel Lines and Transversals

This concept teaches students how to use the Triangle Proportionality Theorem with multiple parallel lines.
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## Parallel Lines and Transversals: Support Beams

Parallel Lines and Transversals Interactive
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## Parallel Lines and Transversals Principles

This video gives more detail about the mathematical principles presented in Parallel Lines and Transversals.
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## Parallel Lines and Transversals Examples

This video shows how to work step-by-step through one or more of the examples in Parallel Lines and Transversals.
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## Parallel Lines and Transversals Discussion Questions

A list of student-submitted discussion questions for Parallel Lines and Transversals.
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• Real World Application

## Parallel Lines And Transversals

What if you were asked to design your own city? How would you use parallel lines and transversals to design your city.
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• Study Guide